Standardize usage of virtual/override/final in ui/

ui/compositor/test/test_layer_animation_observer.h

Index: ui/compositor/test/test_layer_animation_observer.h
diff --git a/ui/compositor/test/test_layer_animation_observer.h b/ui/compositor/test/test_layer_animation_observer.h
index bfdcd2822d5c18bb790f9313f2e3164f6feb0494..0f0a18ecd39c88ef665eb85aecb87ccf64c795e4 100644
--- a/ui/compositor/test/test_layer_animation_observer.h
+++ b/ui/compositor/test/test_layer_animation_observer.h
@@ -17,18 +17,15 @@ class LayerAnimationSequence;
 class TestLayerAnimationObserver : public LayerAnimationObserver {
  public:
   TestLayerAnimationObserver();
-  virtual ~TestLayerAnimationObserver();
+  ~TestLayerAnimationObserver() override;
 
-  virtual void OnLayerAnimationEnded(
-      LayerAnimationSequence* sequence) override;
+  void OnLayerAnimationEnded(LayerAnimationSequence* sequence) override;
 
-  virtual void OnLayerAnimationAborted(
-      LayerAnimationSequence* sequence) override;
+  void OnLayerAnimationAborted(LayerAnimationSequence* sequence) override;
 
-  virtual void OnLayerAnimationScheduled(
-      LayerAnimationSequence* sequence) override;
+  void OnLayerAnimationScheduled(LayerAnimationSequence* sequence) override;
 
-  virtual bool RequiresNotificationWhenAnimatorDestroyed() const override;
+  bool RequiresNotificationWhenAnimatorDestroyed() const override;
 
   const LayerAnimationSequence* last_ended_sequence() const {
     return last_ended_sequence_;